-er -ic b-u bbb bbc bbe bbi bbk bbm bbn bbr bbs bbt bbu bcb bcc bce bci bck bcm bcn bcr bcs bct bcu be- beb bec bee bei bek bem ben ber bes bet beu bi- bib bic bie bii bik bim bin bir bis bit biu bkb bkc bke bkk bkm bkn bkr bks bkt bmb bmc bme bmi bmk bmm bmn bmr bms bmt bmu bnb bnc bne bni bnk bnn bnr bns bnt bnu brb bre bri brk brm brn brr brs brt bru bsb bsc bse bsi bsk bsm bsn bsr bss bst bsu btb btc bte bti btk btm btn btr bts btt btu bub buc bue bui buk bum bun bur bus but buu c-- cbb cbc cbe cbi cbk cbm cbn cbr cbs cbt cbu ccb ccc cce cci cck ccm ccn ccr ccs cct ccu ce- ceb cec cee cei cek cem cen cer ces cet ceu ci- cib cic cie cii cik cim cin cir cis cit ciu ckb ckc cki ckm cks ckt cmb cmc cme cmi cmk cmm cmn cmr cms cmt cmu cn- cnb cnc cne cni cnm cnn cnr cns cnt cnu crb crc cre cri crk crm crn crr crs crt cru csb csc cse csi csk csm csn csr css cst csu ctb ctc cte cti ctk ctm ctn ctr cts ctt ctu cub cuc cue cui cuk cum cun cur cus cut cuu ebb ebc ebe ebi ebk ebm ebn ebr ebs ebt ebu ec- ecb ecc ece eci eck ecm ecn ecr ecs ect ecu eeb eec eee eek eem een eer ees eet eib eic eie eii eik eim ein eir eis eit eiu ekb ekc eke eki ekr eks ekt eku em- emb emc eme emi emk emm emn emr ems emt emu en- enb enc ene eni enk enm enn enr ens ent enu erb erc ere eri erk erm ern err ers ert eru es- esb esc ese esi esk esm esn esr ess est esu etb etc ete eti etk etm etn etr ets ett etu eu- eub euc eue eui eun eur eus eut ibb ibc ibe ibi ibk ibm ibn ibr ibs ibt ibu icb icc ice ici ick icm icn icr ics ict icu ie- iec iee iei iek iem ien ier ies iet iib iic iie iii iim iin iir iis iit iiu ikb ikc ike iki ikk ikr iks ikt iku im- imb imc ime imi imm imn ims imt imu in- inb inc ine ini ink inm inn inr ins int inu ir- irb irc ire iri irk irm irn irr irs irt iru is- isb isc ise isi isk ism isn isr iss ist isu itb itc ite iti itk itm itn its itt itu iu- iub iuc iue iui ium iur ius iut k-t kbb kbc kbe kbi kbk kbm kbn kbr kbs kbu kcb kcc kce kci kck kcm kcn kcr kcs kct kcu ke- keb kec kee kei kek kem ken ker kes ket kib kic kie kii kik kim kin kir kis kit kiu kkb kkc kke kki kkk kkm kkn kkr kks kkt kku kmb kmc kme kmi kmk kmm kms kmt kmu kn- knc kne kni knk knm knn knr knt knu krc kri krk krn krr krs krt kru ksb ksc kse ksi ksk ksm ksn ksr kss kst ksu ktb ktc kte ktk ktm ktn ktr kts ktt ktu kub kuc kue kui kuk kum kun kur kus kut kuu m-r mbb mbc mbe mbi mbk mbm mbr mbs mbt mbu mc- mcb mcc mce mci mck mcm mcn mcr mcs mct mcu meb mec mee mei mek mem men mer mes met meu mi- mib mic mie mii mik mim min mir mis mit miu mkb mkc mke mkk mkm mkn mkr mks mkt mku mmb mmc mme mmi mmk mmm mmn mmr mms mmt mmu mnb mnc mne mni mnk mnm mnn mnr mns mnt mnu mrb mrc mre mri mrk mrm mrn mrr mrs mrt mru msb msc mse msi msk msm msn msr mss mst msu mtb mtc mte mti mtk mtm mtn mtr mts mtt mtu mub muc mue mui muk mum mun mur mus mut muu n-i nbb nbc nbe nbi nbk nbm nbn nbr nbs nbt nbu ncb ncc nce nci nck ncm ncn ncr ncs nct ncu ne- neb nec nee nei nek nem nen ner nes net neu nib nic nie nii nik nim nin nir nis nit niu nkc nke nki nkk nkm nkn nkr nks nkt nku nmb nmc nme nmi nmk nmm nmn nmr nms nmt nmu nnb nnc nne nni nnk nnm nnn nns nnt nnu nrb nrc nre nri nrk nrm nrn nrr nrs nrt nru nsb nsc nse nsi nsk nsm nsn nsr nss nst nsu ntb ntc nte nti ntk ntm ntn ntr nts ntt ntu nub nuc nue nui nuk num nun nur nus nut nuu rbb rbc rbe rbi rbk rbm rbn rbr rbs rbt rbu rcb rcc rce rci rcm rcn rcr rcs rct rcu re- reb rec ree rei rek rem ren rer res ret reu rib ric rie rii rik rim rin rir ris rit rkb rkc rke rkk rkm rks rkt rku rmb rmc rme rmi rmm rmn rmr rms rmt rnb rnc rni rnm rnn rnr rns rnt rnu rrb rrc rri rrk rrm rrn rrr rrs rrt rru rsb rsc rse rsi rsk rsm rsn rsr rss rst rsu rtb rtc rte rti rtk rtm rtn rtr rts rtt rtu rub ruc rue rui ruk rum run rur rus rut ruu sbb sbc sbe sbi sbk sbm sbn sbr sbs sbt sbu scb scc sce sci sck scm scn scr scs sct scu se- seb sec see sei sek sem sen ser ses set seu sib sic sie sii sik sim sin sir sis sit siu sk- skb skc ske ski skk skm skr sks skt sku